Nonlinear saturation of bubble evolution in a two-dimensional single-mode stratified compressible Rayleigh-Taylor instability
Cheng-Quan Fu, Zhiye Zhao, Xin Xu, Pei Wang, Nansheng Liu, Zhen‐Hua Wan, Xi‐Yun Lu
Abstract
For the compressible Rayleigh-Taylor instability (RTI), density stratification is found to cause different bubble behaviors for different Atwood number (At) values. We propose a modified buoyancy-drag model that interprets the physical mechanism causing these behaviors, and analyze the acceleration behavior of a bubble at high At in detail. This work provides a more comprehensive understanding of the compressibility effects on nonlinear evolution of RTI.
Topics & Concepts
Rayleigh–Taylor instabilityBubbleBuoyancyCompressibilityInstabilityMechanicsNonlinear systemPhysicsStratification (seeds)Rayleigh scatteringRichtmyer–Meshkov instabilityNeutral buoyancyClassical mechanicsStatistical physicsOpticsBotanyBiologyQuantum mechanicsSeed dormancyDormancyGerminationLaser-Plasma Interactions and DiagnosticsParticle Dynamics in Fluid FlowsFluid Dynamics and Turbulent Flows